/Engine/Plugins/Online/OnlineFramework/Source/Party/Public/Chat/SocialChatManager.h
virtual void HandleChatPrivateMessageReceived ( const [FUniqueNetId](API\Runtime\CoreOnline\Online\FUniqueNetId) & LocalUserId, const [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< [FChatMessage](API\Plugins\OnlineSubsystem\Interfaces\FChatMessage) > & ChatMessage )